Telephone amplifier



FIG. 1 is a top perspective view of a telephone amplifier showing my new design;

FIG. 2 is a bottom rear perspective view thereof; and

FIG. 3 is a front perspective view taken at a reduced scale and connected to a telephone handset.

The broken lines representing the conventional telephone are shown for illustrative purposes. 

The ornamental design for a telephone amplifier, as shown and described. 